GB191125158A - Improvements in Automatic Resistance Regulators for Telegraph Lines and the like. - Google Patents

Improvements in Automatic Resistance Regulators for Telegraph Lines and the like.

Info

Publication number
GB191125158A
GB191125158A GB191125158DA GB191125158A GB 191125158 A GB191125158 A GB 191125158A GB 191125158D A GB191125158D A GB 191125158DA GB 191125158 A GB191125158 A GB 191125158A
Authority
GB
United Kingdom
Prior art keywords
contact
galvanometer
current
resistance
move
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Edouard Belin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191125158A publication Critical patent/GB191125158A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems

Abstract

25,158. Belin, E. April 19. Regulation, automatic systems and apparatus for.-The resistance of a telegraph or like line 1 is regulated automatically by means of a galvanometer 4, the needle of which carries two contacts 42, 43 in circuits arranged to drive the motor 49 to move the rheostat contact 40. It is arranged that the normal strength of current is such as to close the contact 42, 45 and open the contact 43, 47. Any deviation from this condition either opens the one contact or closes the other, and the relays 44, 46 bring the motor 49 into circuit to move the contact 40 and thus to restore the normal conditions. The resistance 39 may be placed in shunt to the galvanometer or in an arm of a Wheatstone bridge. When alternating current is used, the galvanometer is placed in circuit synchronously with the alternations of the current.
GB191125158D 1911-04-19 1911-04-19 Improvements in Automatic Resistance Regulators for Telegraph Lines and the like. Expired GB191125158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191125158T 1911-04-19

Publications (1)

Publication Number Publication Date
GB191125158A true GB191125158A (en) 1912-03-07

Family

ID=32568367

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191125158D Expired GB191125158A (en) 1911-04-19 1911-04-19 Improvements in Automatic Resistance Regulators for Telegraph Lines and the like.

Country Status (1)

Country Link
GB (1) GB191125158A (en)

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